KS3 Acids and Alkalis

Vomit, vinegar and lemon juice are all examples of...

• acids

• alkalis

• neutral solutions

What does this hazard symbol mean?

• toxic

• flammable

• corrosive

• explosive

A concentrated acid has _________ particles of acid per litre of water than a dilute acid

• the same number of

• more

• less

What is used to tell if a substance is acid, alkaline or neutral?

• a thermometer

• a balance

• an indicator

• paper

Which litmus paper would you use to tell if a substance is acidic?

• red

• blue

What is the pH of a neutral solution?

• 1

• 14

• 5

• 7

What type of reaction occurs when you react an acid with an alkali?

• combustion

• decomposition

• no reaction

• neutralisation

What is the name for a soluble base?

• acid

• alkali

• neutral solution

Something that can dissolve in water is said to be...

• insoluble

• soluble

HCl, HNO₃ and H₂SO₄ are all acids. What element do all acids contain?

• oxygen

• hydrogen

• nitrogen

• sulfur